5 Simple Techniques For sleep
5 Simple Techniques For sleep
Blog Article
The returned price of overload (three) signifies no matter whether pred evaluated to correct, regardless of whether there was a stop asked for or not.
atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit
The sleep may possibly resume previously if a sign that isn't dismissed is acquired. In these kinds of situation, if remaining is just not NULL, the remaining time length is stored into the object pointed to by remaining.
These components are supplied for good-grained atomic operations allowing for lockless concurrent programming. Each individual atomic Procedure is indivisible with regards to almost every other atomic operation that requires the identical object. Atomic objects are totally free of data races.
Mutual exclusion algorithms reduce a number of threads from simultaneously accessing shared assets. This prevents details races and offers help for synchronization amongst threads. Described in header
Waits for The end result to be out there. Blocks till specified timeout_duration has elapsed or the result will become out there, whichever will come initial. The return price identifies the point out of the result.
Even if the clock in use is std::chrono::steady_clock or An additional monotonic clock, a method clock adjustment could induce a spurious wakeup.
Constant Explanation future_status::deferred The shared state contains a deferred function using lazy analysis, so The end result are going to be computed only when explicitly asked for future_status::Completely ready The end result is prepared future_status::timeout The timeout has expired [edit] Exceptions
This overload may very well be utilised to disregard spurious awakenings while looking ahead to a selected issue to become true.
This operate might block for for a longer period than sleep_duration on account of scheduling or resource rivalry delays.
If the future is the results of a get in touch with to std::async that made use of lazy evaluation, this functionality returns right away without waiting around.
A semaphore is a lightweight Tips to improve your sleep routine synchronization primitive accustomed to constrain concurrent usage of a shared resource. When both would suffice, a semaphore is usually much more successful than the usual problem variable. Described in header
atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit
This enables the purpose to examine if stop continues to be asked for through its execution, and return if it's got.
When the std::potential received from std::async is not really moved from or bound to a reference, the destructor from the std::potential will block at the conclusion of the entire expression until the asynchronous operation completes, primarily generating code which include the following synchronous: